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Related papers: Extragalactic Star Clusters in Merging Galaxies

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In Galactic studies a distinction is made between (open) star clusters and associations. For barely resolved objects at a distance of several Mpc this distinction is not trivial to make. Here we provide an objective definition by comparing…

Astrophysics of Galaxies · Physics 2011-06-17 Mark Gieles , Simon Portegies Zwart

The galactic population of globular clusters are old, dense star systems, with a typical cluster containing $10^4 - 10^6$ stars. As an old population of stars, globular clusters contain many collapsed and degenerate objects. As a dense…

Astrophysics · Physics 2016-10-19 Matthew Benacquista

We present moderate-resolution Keck spectra of nine candidate globular clusters in the possible merger-remnant elliptical galaxy NGC 3610. Eight of the objects appear to be bona fide globular clusters of NGC 3610. We find that two of the…

Aims.Recently a new analysis of cluster observations in the Milky Way found evidence that clustered star formation may work under tight constraints with respect to cluster size and density, implying the presence of just two sequences of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 S. Pfalzner , A. Eckart

Populations of young star clusters show significant differences even among "normal" disk galaxies. In this contribution I discuss how properties of young cluster systems are related to those of their host galaxies, based on a recent study…

Astrophysics · Physics 2007-05-23 Soeren S. Larsen

AIMS: The cluster of hot stars observed in orbit around the central black hole of M31 has been interpreted as a 200 Myr starburst. The formation of a population of young stars in close proximity to a massive black hole presents a difficult…

Astrophysics · Physics 2009-11-11 Pierre Demarque , Shanil Virani

This review summarises the main properties of Young Massive Clusters (YMCs), including their population properties, particularly focusing on extragalactic cluster samples. We discuss potential biases and caveats that can affect the…

Astrophysics of Galaxies · Physics 2016-11-23 Nate Bastian

Star-to-star light-element abundance variations, know as multiple stellar populations (MPs), are common in almost all Galactic globular clusters. Recently, MPs have also been detected in a number of massive clusters with ages in excess of 2…

Solar and Stellar Astrophysics · Physics 2019-05-15 Chengyuan Li , Richard de Grijs

We review progress in numerical simulations of star cluster formation. These simulations involve the bottom-up assembly of clusters through hierarchical mergers, which produces a fractal stellar distribution at young (~0.5 Myr) ages. The…

Astrophysics of Galaxies · Physics 2015-05-14 Cathie Clarke

We present a comparison of high-resolution, integrated-light, detailed chemical abundances for Galactic and extragalactic globular clusters in both massive galaxies and dwarf galaxies. We include measurements of Fe, Ca, Si, Na, and Al for…

Cosmology and Nongalactic Astrophysics · Physics 2013-02-27 J. E. Colucci , R. A. Bernstein , A. McWilliam , J. G. Cohen

The formation of populous secondary star cluster systems is a widespread phenomenon in mergers of gas-rich galaxies. Many, if not most, of those clusters are massive and compact enough to be young globular clusters (GCs). GC systems in most…

Astrophysics · Physics 2007-05-23 Uta Fritze-v. Alvensleben , Richard de Grijs

We present the recent merger history of massive galaxies in a spectroscopically-confirmed proto-cluster at z=1.62. Using HST WFC3 near-infrared imaging from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS), we…

Recent work on globular cluster systems in dwarf galaxies outside the Local Group is reviewed. Recent large imaging surveys with the Hubble Space Telescope and follow-up spectroscopy with 8-m class telescopes now allow us to compare the…

Astrophysics · Physics 2007-05-23 Bryan W. Miller

A cluster finding method was developed and applied in four Local Group Galaxies (SMC, M31, M33 and NGC 6822). The aim is to study the young stellar population of these galaxies by identifying stellar structures in small and large scales.…

Instrumentation and Methods for Astrophysics · Physics 2016-04-13 Petros Drazinos , A. Karampelas , E. Kontizas , M. Kontizas , A. Dapergolas , E. Livanou , I. Bellas-Velidis

The rich star clusters in the Large Magellanic Cloud (LMC) are ideal for studying the process of star formation. Here we focus on the determination of age spreads amongst the massive stars in two young clusters, NGC1818 and NGC1805. We…

Astrophysics · Physics 2007-05-23 R. A. Johnson , S. F. Beaulieu , R. A. W. Elson , G. Gilmore , N. Tanvir , B. Santiago

In order to estimate the masses of the compact, young star clusters in the merging galaxy pair, NGC 4038/4039 (``the Antennae''), we have obtained medium and high resolution spectroscopy using ISAAC on VLT-UT1 and UVES on VLT-UT2 of five…

Astrophysics · Physics 2016-08-30 Sabine Mengel , Matthew D. Lehnert , Niranjan Thatte , Reinhard Genzel

We used the Hubble Space Telescope to take a wide field, multicolor image of the high redshift cluster MS1054-03 at z=0.83. The Keck telescope was used to take 200 redshifts in the field. We have a total of 81 spectroscopically confirmed…

Astrophysics · Physics 2007-05-23 M. Franx , P. G. van Dokkum , D. G. Fabricant , D. Kelson , G. D. Illingworth

We present Gemini optical spectroscopy of three young star clusters in the western tidal tail of NGC3256. Compact star clusters (as opposed to dwarf-galaxy candidates) in tidal tails are rare, with these three clusters the first for which…

Astrophysics · Physics 2009-11-11 Gelys Trancho , Nate Bastian , Francois Schweizer , Bryan W. Miller

Archival WFC3/UVIS imaging of Arp 299 (NGC 3690E + NGC 3690W) is retrieved to investigate the young massive cluster (YMC) population of this ongoing merger. We extract 2182 cluster candidates, including 1323 high confidence photometric…

Astrophysics of Galaxies · Physics 2018-10-24 Zara Randriamanakoto , Petri Väisänen , Stuart D. Ryder , Princy Ranaivomanana

We use archival {\it Hubble Space Telescope} observations of broad-band images from the ultraviolet (F255W-filter) through the near infrared (NICMOS F160W-filter) to study the star cluster population of the interacting spiral galaxy M51. We…

Astrophysics · Physics 2009-11-10 N. Bastian , M. Gieles , H. J. G. L. M. Lamers , R. de Grijs , R. A. Scheepmaker